Improvement in heating-stoves



ings, forming part of this specification,A in

velliptical-shaped combined sheet and east iron l lower ends of this drum a sheet-iron top, a,

Afully understood from the drawings. The door bers by means of an auxiliary bottom sheet,

The chamber g below the bottom f is the ash above this bottom is the circulation-chamberv 1 UNITED STATES JOSEPH E. KENDALL,

PATENT OFFICE.

or CAIRO, ILLmoIs.

IMPROVEMENT IN HEATING-Noves.

June 26 To all whom twang/concern Improvement'in Sheet-Iron Drum-Stoves; and l do hereby declare that the following isa full, clear, and exact description of the same, reference being had to the accompanying drawwhich- Figure 1 is a View of a drum-stove as improved by me. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a horizontal section in the line y y of Fig. 2. Fig.'4 is a transverse section of the same in the line w Fig. 3.

Myimprovements relate to the well-'known drum-stove in which wood only has heretofore been used as fuel. The nature of `my invention consists in certain constructions hereinafter specified, whereby the aforesaid elliptical sheet-irondrum-stove is rendered capable of serving either as a coal or wood burner, and, at the same time, its durability greatly enhanced, while convenience for removal of ashes is afforded and the flying of ashes about theroom when the grate is shaken prevented.

To enable others skilled in the art to make and use my invention, I will proceed to de scribe it.

-A is a Russia sheetiron drum, of elliptical form, in horizontal section'. To the upper and and bottom b are fastened by a lap-joint, c, as shown. The front end of the top and a portion of the front of the drum are cut away to form a feed-door passage, and over this passage a hood-shaped door, d, is applied, and hinged permanently to the top sheet, as at e, so as to swing back upon the top, as will be thus permanently hinged will not be liable to be tumbled off when opened to introduce fuel. This drum I divide into two horizontal chain! f, which'is set about five or six inches (more or less) above the bottom proper of the drum;

pit and ash-draft passage, and the chamber g f I Be it known that I, J osErII E. KENDALL, Vof Cairo, in the county of Alexander and State `of Illinois, haveinvented a new and useful specification forming part of Letters Patent No. 154,399, dma August 25,1874; application ined Y a ,1873. Y

port an ash-drawer,j, which is inserted through an opening cut in the front of the lower part of the drum, as shown. The drawer at its rear end is cut down, so as to permit it to pass in and out free of contact with a shake-bar of a grate which is used in connection with this stove. B is a lining of common sheet-iron applied to the drum, extending up from the auxiliary bottom and terminating near the middle of the depth of the drum. This lining is in form of the outer drum, but of smaller diameter, except at its upper edge, where it is flanged horizontally, as at lc, so as to bear against the inner circumference of the drum A. This lining,

' when placed in the drum, rests with its lower end upon the auxiliary bottom and its iiange against the inside of the drum, and by this means a hollow wall or a continuous closed chamber, Z, is formed between the outside drum and the lining. This -lining braces the outer drum, and prevents it from collapsing or warping and having its beauty marred by the effects of the intense heat of the re. The

space or chamber l saves the lining from very rapid destruction by the fire, as the heat has a chance to radiate from the lining and pass, in a modified condition, to the interior surface of the drum. C is a sheet-iron angle-ring,

fastened to the auxiliary bottom by a lapjoint at m. This ring surrounds a circular hole, n, cut through the said auxiliary bot torn, and leading into the ash-pit. Within the ring, and upon its horizontal portion, a

passage, q, is cut, as shown. This cylinder is formed with an'` external or male bead,1', which lits a corresponding' or femaleL bead formed on the lining. By this bead the cylinder is held in position. F is a coal-burning cylinder, formed with external horizontal anges s at top and bottom. This cylinder ts exactly the outside of the ring C, while its flanged portion exactly ts the inside of the wood burning cylinder vE. It is set down around the ring C upon the ange p withinthe cylinder E, as shown. G is a horizontal coal plate or shelf, arranged around the upper end" of the coal-cylinder, and upon the iiange-of the lining. This plate extends from the rear of the wood-cylinder to the front of the drum, as shown. lIts rear edge is turned up at right angles, as at t, so as to form a ledge to arrest the coal which might fail to fall intothel cylinder while the re is being supplied with fuel. H H are vertical screw-rods, with nuts on their upper ends, for coniinin g the coal plate or shelf, cylinders, and other parts in position. These rods extend up from the lowerpart of the stove where their heads have a firm hold or support. It will be observed that a space or chamber is formed between the cylinders E and F, and by this means the coal-cylinder will be saved from burning out very rapidly. lis the draftpipe of the stove, as used for wood, and J is a vertical extension of this pipe within `the stove. This extension is of flaring form, and reaches nearly to the auxiliary bottom. When the stove is used for burning coal this extension is used. K is an ash-escape hole in the auxiliary bottom. This hole is almostdirectly under ythe draft-pipe, and it is covered by a horizontal slide, K', the rod of which extends out through the drum. By opening the damper when the grate is shaken the draft willl draw all the ying ashes to the back part of the ash-pit, and thus prevent their flying out at the front of the ash-pit. Y

The stove, as represented in the drawings,

is adapted for burning coal, and is supplied with this fuel by turning up the door and pouring the coal `in the cylinder F. Under this construction the heated products of combustion are compelled to circulate against the whole lower surface of the lining, and escape through the draft-pipe near the back and false y bottom ofthe stove. This insures a very thorough heating of the entire radiating surface. When-the grate is vibrated to shake down the ashes, the ash-escape passage is opened, and the ashes pass toward it.

To use the stove for wood, take out the cylinder-F and the coal plate or shelf, and the in ternal extension of the draft-pipe. Under this construction the flame will pass out through the hole g in the cylinder, and then up to the draft-pipe.

The combination of the elliptical drum and the cylindrical combustion chamber in the manner shown secures a very powerful heat from a very compact structure, forv the flame or heat of the fire from the small combustioncylinder, arranged at the front end of the drum, will almost immediately strike the iiattened sides of the drum, and continue to impinge upon the same until its power to heat is spent, or it escapes inform of smoke into the draftflue at the back end of drum.

What I claim as new is,-

1. The combination, with the sheet iron drum A, having a door and a draft-passage, of the partial sheet-iron lining B, the perforated auxiliary bottom f, having the ring C upon it, the cylinder E having a name-passage, q, through its lower part, and the grate D, the ,Whole constructed and arranged substantially as described. l

2. The removable coal-cylinder F, in combination with the cylinder E, grate D, and the sheet-iron drum-stove with internal extension draft-pipe, substantially in the manner described and shown.

3. The combination of the coal-shelf G, having the tlanget, the drum A, having the lining B, and the coal-combustion chamber E F, substantially as described.

4. The combination of the draft-pipe I, the drum A, the ash-escape passage K, the slide K', the ash-pit g, and the combustion-chamber, having a vibrating grate at its bottom, through which the ashesl are discharged directly into the ash-pit, all substantially in the manner shown and described.

. VJOSEPH E. KENDALL.

Witnesses:

- OLIVER PERRY LAWRENCE,

WILLIAM H. DAVIS. 

